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Finding the Fourth Proportional to 13,464.25, 18,582.11 and 7,879.93

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Solution

The fourth proportional to 13,464.25, 18,582.11 and 7,879.93 is: 10,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,464.25 : 18,582.11 = 7,879.93 : x
  2. Step 2: Convert to fraction form
    13,464.25/18,582.11 = 7,879.93/x
  3. Step 3: Cross multiply
    13,464.25x = 18,582.11 × 7,879.93
  4. Step 4: Simplify right side
    13,464.25x = 146,425,686.65
  5. Step 5: Solve for x
    x = 146,425,686.65/13,464.25
  6. Step 6: Final answer
    x = 10,875.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.